CN114509549B - Continuous detection system and method for boron in seawater desalination produced water - Google Patents

Continuous detection system and method for boron in seawater desalination produced water Download PDF

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CN114509549B
CN114509549B CN202210116513.3A CN202210116513A CN114509549B CN 114509549 B CN114509549 B CN 114509549B CN 202210116513 A CN202210116513 A CN 202210116513A CN 114509549 B CN114509549 B CN 114509549B
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boron content
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CN114509549A (en
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徐兆郢
叶治安
张江涛
康少鑫
王子闯
吴建国
董娟
尹萍
霍敏艳
叶茂
刘贵栋
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Xian TPRI Water Management and Environmental Protection Co Ltd
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    • G—PHYSICS
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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    • C02F2103/08—Seawater, e.g. for desalination
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Abstract

A continuous detection system and method for boron in sea water desalination produced water comprises a water taking system, a primary reverse osmosis system, a buffer water tank, a secondary reverse osmosis system and a product water tank; the water taking system is connected with an inlet of the first-stage reverse osmosis system, an outlet of the first-stage reverse osmosis system is divided into two paths, one path is connected with the second-stage reverse osmosis system through a buffer water tank, and the second-stage reverse osmosis system is connected with a product water tank; the other path of the outlet of the first-stage reverse osmosis system is connected with a product water pool. The monitoring of the boron content in the primary reverse osmosis produced water is realized through the real-time online detection of the initial boron content, the inlet water temperature and the pH value of the raw seawater, a basis is provided for an operator to start the secondary reverse osmosis desalination system, the frequency of manually detecting the quality of the desalted water is reduced, and the boron content of the final produced water is less than 1mg/L.

Description

Continuous detection system and method for boron in seawater desalination produced water
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a continuous monitoring system and method for boron in seawater desalination produced water.
Background
The reverse osmosis technology is mature, has lower production and use cost compared with a thermal method, and is widely applied to the fields of electric power, petrochemical industry, steel, electronics, medicines, food and beverage, municipal administration, environmental protection and the like, and is used in coastal areas, islands and ships for sea water desalination, brackish water desalination in inland areas, circulating water sewage treatment of a thermal power plant, ultrapure water preparation, drinking water production process. However, due to the influence of the floating of the temperature of the raw seawater inlet water, the desalination rate of the reverse osmosis membrane element fluctuates to a certain extent, the required boron content in the sanitary standard of domestic water is less than 0.5mg/L, the desalination rate of a reverse osmosis system in summer is reduced to a certain extent, the boron content of the primary reverse osmosis water is usually higher than 1mg/L, and the secondary boron removal treatment is needed to be carried out timely according to the boron content of the desalinated water before the primary reverse osmosis water enters a municipal pipe network, so that the boron content in the desalinated water needs to be detected regularly.
At present, most of detection of the boron content in the desalted water adopts a curcumin spectrophotometry and an azomethine-H spectrophotometry, the one-time detection step is complicated, and a marking is required to be changed frequently to ensure the detection precision, so that the real-time detection of the boron content in the desalted water is difficult.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a continuous detection system and a continuous detection method for boron in sea water desalination produced water, and the method can monitor the boron content of the sea water desalination device adopting a reverse osmosis process in real time according to the water temperature and the pH value of the water, so that operators can more conveniently master the total level of the boron content of the reverse osmosis produced water, provide a basis for the operators to start secondary reverse osmosis desalination, and reduce the frequency of manually detecting the water quality of the desalinated water.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A detection system for boron in sea water desalination produced water comprises a water taking system, a first-stage reverse osmosis system, a buffer water tank, a second-stage reverse osmosis system and a product water tank; the water taking system is connected with an inlet of the first-stage reverse osmosis system, an outlet of the first-stage reverse osmosis system is divided into two paths, one path is connected with the second-stage reverse osmosis system through a buffer water tank, and the second-stage reverse osmosis system is connected with a product water tank; the other path of the outlet of the first-stage reverse osmosis system is connected with a product water pool.
Further, an on-line temperature detector and a pH on-line detector are arranged on the pipelines of the water taking system and the first-stage reverse osmosis system.
Further, a buffer water tank is arranged between the outlet second-stage reverse osmosis system of the first-stage reverse osmosis system.
A method for detecting boron in sea water desalinated water comprises the following steps:
Raw seawater enters a first-stage reverse osmosis system to carry out first-stage reverse osmosis, a part of first-stage reverse osmosis produced water of the first-stage reverse osmosis system enters a product water tank, and the boron content in the first-stage reverse osmosis produced water is calculated in real time according to the initial boron content, the water temperature and the pH value of the raw seawater; when the boron content in the primary reverse osmosis produced water is more than 1mg/L, the secondary reverse osmosis system is started, the produced water of the secondary reverse osmosis system enters a product water tank, and the produced water and the primary reverse osmosis produced water are directly mixed in the product water tank, so that the boron content of the produced water in the product water tank is less than 1mg/L.
Further, the initial boron content of the raw seawater is 5mg/L, and when the initial pH is 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y＝0.174e0.051t (1)
Wherein, t is the initial water temperature of the original seawater;
y-first stage reverse osmosis to produce water boron content.
Further, when the initial boron content of the raw seawater is more than 5mg/L and the initial pH is 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y＝0.174e0.051t+(y1-5)(0.033e0.053t)
Wherein, t is the initial water temperature of the original seawater;
y 1 -initial boron content of raw seawater.
Further, when the initial boron content of the raw seawater is 5mg/L and the pH is more than 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y1＝0.174e0.051t+(p1-8)(-5*10-5t2-0.001t-0.016)*10
Wherein, p 1 is the initial pH value of the raw seawater;
t-initial water temperature of the original seawater;
y-first stage reverse osmosis to produce water boron content.
Further, when the initial boron content of the raw seawater is more than 5mg/L and the pH is more than 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y1＝0.174e0.051t+(y1-5)(0.033e0.053t)+(p1-8)(-5*10-5t2-0.001t-0.016)*10
Wherein, p 1 is the initial pH value of the raw seawater;
t-initial water temperature of the original seawater;
y-first stage reverse osmosis to produce water boron content.
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, the primary reverse osmosis system and the secondary reverse osmosis system are arranged, when the boron content in the primary reverse osmosis produced water is more than 1mg/L, the secondary reverse osmosis system is started, and the primary reverse osmosis produced water and the secondary reverse osmosis produced water are mixed, so that the boron content in the produced water is less than 1mg/L.
According to the method, the primary reverse osmosis produced water boron content is calculated aiming at the raw seawater with the initial boron content range of 5-10mg/L, the initial pH of 8.0-9.0 and the initial water temperature of 5-30 ℃, the monitoring of the primary reverse osmosis produced water boron content is realized through the real-time on-line detection of the initial boron content, the inlet water temperature and the pH value of the raw seawater, the basis is provided for an operator to start a secondary reverse osmosis desalination system, the frequency of manual detection of the water quality of the desalinated water is reduced, and the boron content of the final produced water is less than 1mg/L.
Furthermore, the boron content of the water produced by the first-stage reverse osmosis can be rapidly calculated by utilizing a corresponding formula aiming at different boron contents, pH values and temperatures
Drawings
FIG. 1 is a schematic diagram of a detection system according to the present invention. FIG. 2 shows the relationship between the primary reverse osmosis water-producing boron content and the initial temperature and pH of the raw seawater, which is actually given by the combination engineering, (a) shows the primary reverse osmosis water-producing boron content and the temperature of the raw seawater, (b) shows the water-producing boron content and the temperature of the raw seawater under the condition that the initial boron content of the raw seawater is increased by 1mg/L, and (c) shows the water-producing boron content and the temperature of the raw seawater under the condition that the initial pH of the raw seawater is increased by 0.1.
In the figure, 1 is a water taking system, 2 is a primary reverse osmosis system, 3 is a buffer water tank, 4 is a secondary reverse osmosis system, 5 is a product water tank, 6 is an online temperature detector, and 7 is a pH online detector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the invention provides a detection system for boron in sea water desalinated produced water, which comprises a water taking system 1, a primary reverse osmosis system 2, a buffer water tank 3, a secondary reverse osmosis system 4 and a product water tank 5; the water taking system 1 is connected with an inlet of the first-stage reverse osmosis system 2, an outlet of the first-stage reverse osmosis system 2 is divided into two paths, one path is connected with an inlet of the buffer water tank 3, and an outlet of the buffer water tank 3 is connected with the product water tank 5; the other path of the outlet of the first-stage reverse osmosis system 2 is connected with a product water tank 5.
The pipeline of the water intake system 1 and the pipeline of the first-stage reverse osmosis system 2 are provided with an on-line temperature detector 6 and a pH on-line detector 7.
A method for detecting boron in sea water desalinated water comprises the following steps:
Raw seawater enters a primary reverse osmosis system 2, the temperature of the raw seawater is monitored and recorded in real time by an online temperature detector 6 at the water inlet of the primary reverse osmosis system 2, one part of primary reverse osmosis produced water of the primary reverse osmosis system 2 enters a product water tank 5, and the other part of primary reverse osmosis produced water enters a buffer water tank 3, and the boron content in the primary desalted water is detected and calculated in real time according to the initial boron content, the water temperature and the pH value of the raw seawater; according to the calculation result, when the boron content in the primary reverse osmosis produced water is greater than 1mg/L, the secondary reverse osmosis system 4 is started, the output of the secondary reverse osmosis system is regulated timely according to the boron content in the primary reverse osmosis produced water, the produced water of the secondary reverse osmosis system 4 enters the product water tank 5 and is directly mixed with the primary reverse osmosis produced water in the product water tank 5, so that the boron content of the final produced water is less than 1mg/L.
Raw seawater enters a first-stage reverse osmosis system 2 to carry out first-stage reverse osmosis, a part of first-stage reverse osmosis produced water of the first-stage reverse osmosis system 2 enters a product water tank 5, and the boron content in the first-stage reverse osmosis produced water is calculated in real time according to the initial boron content, the water temperature and the pH value of the raw seawater; when the boron content in the primary reverse osmosis produced water is more than 1mg/L, the secondary reverse osmosis system 4 is started, the produced water of the secondary reverse osmosis system 4 enters the product water tank 5 and is directly mixed with the primary reverse osmosis produced water in the product water tank 5, so that the boron content of the produced water in the product water tank 5 is less than 1mg/L.
The method is suitable for calculating the boron content in the raw seawater with the initial boron content ranging from 5 mg/L to 10mg/L, the initial pH ranging from 8.0 to 9.0 and the initial water temperature ranging from 5 ℃ to 30 ℃.
Aiming at the initial boron content and the initial pH of the original seawater, the primary reverse osmosis water-producing boron content is calculated, and the method specifically comprises the following steps:
1) The initial boron content of the raw seawater is 5mg/L, and when the initial pH value is 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y＝0.174e0.051t (1)
Wherein, t is the initial water temperature of the original seawater and DEG C;
y-first stage reverse osmosis water producing boron content, mg/L.
2) The initial boron content of the raw seawater is more than 5mg/L, and when the initial pH value is 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y＝0.174e0.051t+(y1-5)(0.033e0.053t) (2)
Wherein, t is the initial water temperature of the original seawater and DEG C;
y 1 -initial boron content of raw seawater, mg/L.
3) When the initial boron content of the raw seawater is 5mg/L and the pH value is more than 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y1＝0.174e0.051t+(p1-8)(-5*10-5t2-0.001t-0.016)*10 (3)
Wherein, p 1 is the initial pH value of the raw seawater;
t-initial water temperature of raw seawater at DEG C
Y-first stage reverse osmosis water producing boron content, mg/L.
4) When the initial boron content of the raw seawater is more than 5mg/L and the pH value is more than 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y1＝0.174e0.051t+(y1-5)(0.033e0.053t)+(p1-8)(-5*10-5t2-0.001t-0.016)*10 (4)
Wherein, p 1 is the initial pH value of the raw seawater;
t-initial water temperature of raw seawater at DEG C
Y-first stage reverse osmosis water producing boron content, mg/L.
Example 1
Raw seawater enters a primary reverse osmosis system 2, the temperature of the raw seawater is monitored and recorded in real time through a primary reverse osmosis inflow online temperature detector 6, a primary reverse osmosis water producing part enters a product water tank 5 and a part enters a buffer water tank 3, a pH online monitor 7 is arranged at the inlet of the buffer water tank 3 to monitor and record the pH of primary desalted water in real time, and the boron content in the primary desalted water is calculated in real time according to the initial boron content of the raw seawater, the water temperature and the pH of the primary desalted water; when the boron content of the primary desalted water is more than 1mg/L, a secondary reverse osmosis system is started, and the water produced by the secondary reverse osmosis system enters a product water tank and is mixed with the primary reverse osmosis water produced by the primary reverse osmosis system in the product water tank.
When the boron content of the raw seawater is 5mg/L, the initial pH value is 8.0, when the water temperature of the raw seawater is 5 ℃, the initial pH value is 8, the boron content in the primary reverse osmosis produced water is about 0.22mg/L according to the calculation of the formula (1), and when the water temperature of the raw seawater is 25 ℃, the initial pH value is 8, the boron content of the primary reverse osmosis produced water is about 0.62mg/L.
If the initial pH of the raw seawater is 8 and the initial boron content is more than 5mg/L, calculating the primary reverse osmosis water boron content according to a formula (2); specifically, if the temperature of the raw seawater is 5 ℃, the initial pH value is 8, the initial boron content is 6mg/L, the primary reverse osmosis water-producing boron content is about 0.26mg/L, and if the temperature of the raw seawater is raised to 25 ℃, the primary reverse osmosis water-producing boron content is about 0.74mg/L; if the temperature of the raw seawater is 5 ℃, the initial pH value is 8, the initial boron content is 9mg/L, the primary reverse osmosis water-producing boron content is about 0.39mg/L, and if the temperature of the raw seawater is raised to 25 ℃, the primary reverse osmosis water-producing boron content is about 1.12mg/L.
If the initial pH of the initial raw seawater is greater than 8, calculating and reversely penetrating the boron content by utilizing a formula (3), specifically, if the initial boron content of the raw seawater is 5mg/L, the initial pH is 8.5, the temperature of the raw seawater is 5 ℃, the primary reverse osmosis boron content is about 0.11mg/L, and if the temperature of the raw seawater is raised to 25 ℃, the primary reverse osmosis boron content is about 0.26mg/L.
If the initial pH of the initial raw seawater is greater than 8, calculating the boron content of the first-stage reverse osmosis water by utilizing a formula (4), specifically, if the boron content of the raw seawater is 9mg/L, the initial pH is 8.5, the water temperature of the raw seawater is 5 ℃, the boron content of the first-stage reverse osmosis water is about 0.28mg/L, and if the water temperature of the raw seawater is raised to 25 ℃, the boron content of the first-stage reverse osmosis water is about 0.76mg/L.
Referring to the relation curves between the primary reverse osmosis water-producing boron content and the initial temperature and pH of the raw seawater, which are actually given by combining engineering, referring to (a), (b) and (c) in fig. 2, it can be seen that assuming that the initial boron content of the raw seawater is 5mg/L and the initial pH is 8, the primary reverse osmosis water-producing boron content increases exponentially with the increase of the temperature of the raw seawater, and also increases exponentially with the increase of the temperature of the raw seawater while keeping the initial pH of the raw seawater at 8.0, and that after the pH increases at 8.0, the variation of the primary reverse osmosis water-producing boron content with the temperature of the raw seawater can be fitted by a polynomial, and the overall appearance of the primary reverse osmosis water-producing boron content decreases with the increase of the initial pH, and the temperature decreases more obviously with the higher the temperature.
The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed.
Secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures may refer to the general design, so that the same embodiment and different embodiments of the present disclosure may be combined with each other without conflict.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (3)

1. The method for detecting the boron in the seawater desalination produced water of the detection system is characterized in that the detection system for detecting the boron in the seawater desalination produced water adopted by the method comprises a water taking system (1), a first-stage reverse osmosis system (2), a buffer water tank (3), a second-stage reverse osmosis system (4) and a product water tank (5); the water taking system (1) is connected with an inlet of the first-stage reverse osmosis system (2), an outlet of the first-stage reverse osmosis system (2) is divided into two paths, one path is connected with the second-stage reverse osmosis system (4) through the buffer water tank (3), and the second-stage reverse osmosis system (4) is connected with the product water tank (5); the other path of the outlet of the first-stage reverse osmosis system (2) is connected with a product water tank (5);
An online temperature detector (6) and a pH online detector (7) are arranged on the pipelines of the water taking system (1) and the first-stage reverse osmosis system (2);
a buffer water tank (3) is arranged between the outlet second-stage reverse osmosis system (4) of the first-stage reverse osmosis system (2);
the detection method comprises the following steps:
the initial boron content of the raw seawater is 5-10mg/L, the initial pH is 8.0-9.0, and the initial water temperature is 5-30 ℃;
Raw seawater enters a first-stage reverse osmosis system (2) to carry out first-stage reverse osmosis, a part of first-stage reverse osmosis produced water of the first-stage reverse osmosis system (2) enters a product water tank (5), and the boron content in the first-stage reverse osmosis produced water is calculated in real time according to the initial boron content, the water temperature and the pH value of the raw seawater; when the boron content in the primary reverse osmosis produced water is more than 1mg/L, starting a secondary reverse osmosis system (4), enabling the produced water of the secondary reverse osmosis system (4) to enter a product water tank (5), and directly mixing the produced water with the primary reverse osmosis produced water in the product water tank (5) so that the boron content of the produced water in the product water tank (5) is less than 1mg/L;
when the initial boron content of the raw seawater is 5mg/L and the pH value is more than 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y1=0.174e 0.051t+（p1-8）(-5*10-5t2 - 0.001t - 0.016）*10
Wherein, p 1 is the initial pH value of the raw seawater;
t-initial water temperature of the original seawater;
y-first-stage reverse osmosis water boron content;
when the initial boron content of the raw seawater is more than 5mg/L and the pH value is more than 8.0, the primary reverse osmosis water-producing boron content is calculated by the following formula:
y1=0.174e 0.051t+（y1-5）（0.033e0.053t）+（p1-8）(-5*10-5t2 - 0.001t - 0.016）*10
Wherein, p 1 is the initial pH value of the raw seawater;
t-initial water temperature of the original seawater;
y-first stage reverse osmosis to produce water boron content.
2. The method for detecting boron in seawater desalination produced water according to claim 1, wherein the initial boron content of raw seawater is 5mg/L, and the initial pH is 8.0, and the primary reverse osmosis produced water boron content is calculated by the following formula:
y=0.174e 0.051t（1）
Wherein, t is the initial water temperature of the original seawater;
y-first stage reverse osmosis to produce water boron content.
3. The method for detecting boron in seawater desalination produced water according to claim 1, wherein when the initial boron content of raw seawater is more than 5mg/L and the initial pH is 8.0, the primary reverse osmosis produced water boron content is calculated by the following formula:
y=0.174e 0.051t+（y1-5）（0.033e0.053t）
Wherein, t is the initial water temperature of the original seawater;
y 1 -initial boron content of raw seawater.
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0910766A (en) * 1995-06-29 1997-01-14 Nitto Denko Corp Desalting of sewater
JP2005246281A (en) * 2004-03-05 2005-09-15 Kobelco Eco-Solutions Co Ltd Seawater desalination method and seawater desalination apparatus
KR20110068732A (en) * 2009-12-15 2011-06-22 한국건설기술연구원 Monitoring method of boron removal efficiency in desalination equipment and desalination equipment having such monitoring function
JP2011147894A (en) * 2010-01-22 2011-08-04 Hitachi Ltd Seawater desalination apparatus
KR101402346B1 (en) * 2012-12-27 2014-06-03 주식회사 포스코 Method for seawater desalinating with reverse osmosis
CN206173148U (en) * 2016-11-09 2017-05-17 江苏金环环保设备有限公司 Energy -efficient seawater desalination equipment
CN108083385A (en) * 2017-12-26 2018-05-29 哈尔滨锅炉厂有限责任公司 Improve the counter-infiltration system and recovery method of seawater desalination recovery rate
CN109896653A (en) * 2019-03-24 2019-06-18 中国电建集团华东勘测设计研究院有限公司 A kind of both-end produces the reverse osmosis seawater desalting high-efficiency boron-removing system of water
CN210001671U (en) * 2019-03-24 2020-01-31 中国电建集团华东勘测设计研究院有限公司 Reverse osmosis seawater desalination high-efficiency boron removal system for double-end produced water
CN112597632A (en) * 2020-12-04 2021-04-02 河北工业大学 Optimization method of complex reinforced boron removal spiral-wound membrane element reverse osmosis seawater desalination system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090223897A1 (en) * 2008-03-04 2009-09-10 Peter Villeneuve Method for the Rejection of Boron from Seawater in a Reverse Osmosis System

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0910766A (en) * 1995-06-29 1997-01-14 Nitto Denko Corp Desalting of sewater
JP2005246281A (en) * 2004-03-05 2005-09-15 Kobelco Eco-Solutions Co Ltd Seawater desalination method and seawater desalination apparatus
KR20110068732A (en) * 2009-12-15 2011-06-22 한국건설기술연구원 Monitoring method of boron removal efficiency in desalination equipment and desalination equipment having such monitoring function
JP2011147894A (en) * 2010-01-22 2011-08-04 Hitachi Ltd Seawater desalination apparatus
KR101402346B1 (en) * 2012-12-27 2014-06-03 주식회사 포스코 Method for seawater desalinating with reverse osmosis
CN206173148U (en) * 2016-11-09 2017-05-17 江苏金环环保设备有限公司 Energy -efficient seawater desalination equipment
CN108083385A (en) * 2017-12-26 2018-05-29 哈尔滨锅炉厂有限责任公司 Improve the counter-infiltration system and recovery method of seawater desalination recovery rate
CN109896653A (en) * 2019-03-24 2019-06-18 中国电建集团华东勘测设计研究院有限公司 A kind of both-end produces the reverse osmosis seawater desalting high-efficiency boron-removing system of water
CN210001671U (en) * 2019-03-24 2020-01-31 中国电建集团华东勘测设计研究院有限公司 Reverse osmosis seawater desalination high-efficiency boron removal system for double-end produced water
CN112597632A (en) * 2020-12-04 2021-04-02 河北工业大学 Optimization method of complex reinforced boron removal spiral-wound membrane element reverse osmosis seawater desalination system

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
反渗透海水淡化脱硼技术的研究;王昕彤;;一重技术(第06期);第36-37页 *
大型反渗透海水淡化***双端产水脱硼工艺研究;翁晓丹等;中国给水排水;第36卷(第7期);第27-29页 *
海水预处理及脱硼研究;周磊;衣守志;李爽;;盐业与化工;20110915(第05期);全文 *
膜法海水淡化脱硼工艺运行条件的优化;赵洪武等;净水技术;第38卷(第3期);第110-111页 *
赵洪武 ; 吴成志 ; 迟文浩 ; 吴绍全 ; 李珂 ; 万鹏 ; .膜法海水淡化脱硼工艺运行条件的优化.净水技术.2019,(第03期),全文. *
赵洪武等.膜法海水淡化脱硼工艺运行条件的优化.净水技术.2019,第38卷(第3期),第110-111页. *

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